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   1 /*
   2  * File dwarf.c - read dwarf2 information from the ELF modules
   3  *
   4  * Copyright (C) 2005, Raphael Junqueira
   5  * Copyright (C) 2006, Eric Pouech
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <sys/types.h>
  25 #include <fcntl.h>
  26 #ifdef HAVE_SYS_STAT_H
  27 # include <sys/stat.h>
  28 #endif
  29 #ifdef HAVE_SYS_MMAN_H
  30 #include <sys/mman.h>
  31 #endif
  32 #include <limits.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #ifdef HAVE_UNISTD_H
  36 # include <unistd.h>
  37 #endif
  38 #include <stdio.h>
  39 #ifndef PATH_MAX
  40 #define PATH_MAX MAX_PATH
  41 #endif
  42 #include <assert.h>
  43 #include <stdarg.h>
  44
  45 #include "windef.h"
  46 #include "winbase.h"
  47 #include "winreg.h"
  48 #include "winnls.h"
  49
  50 #include "dbghelp_private.h"
  51
  52 #include "wine/debug.h"
  53
  54 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf);
  55
  56 /* FIXME:
  57  * - Functions:
  58  *      o unspecified parameters
  59  *      o inlined functions
  60  *      o Debug{Start|End}Point
  61  *      o CFA
  62  * - Udt
  63  *      o proper types loading (nesting)
  64  */
  65
  66 #if 0
  67 static void dump(const void* ptr, unsigned len)
  68 {
  69     int         i, j;
  70     BYTE        msg[128];
  71     static const char hexof[] = "0123456789abcdef";
  72     const       BYTE* x = (const BYTE*)ptr;
  73
  74     for (i = 0; i < len; i += 16)
  75     {
  76         sprintf(msg, "%08x: ", i);
  77         memset(msg + 10, ' ', 3 * 16 + 1 + 16);
  78         for (j = 0; j < min(16, len - i); j++)
  79         {
  80             msg[10 + 3 * j + 0] = hexof[x[i + j] >> 4];
  81             msg[10 + 3 * j + 1] = hexof[x[i + j] & 15];
  82             msg[10 + 3 * j + 2] = ' ';
  83             msg[10 + 3 * 16 + 1 + j] = (x[i + j] >= 0x20 && x[i + j] < 0x7f) ?
  84                 x[i + j] : '.';
  85         }
  86         msg[10 + 3 * 16] = ' ';
  87         msg[10 + 3 * 16 + 1 + 16] = '\0';
  88         TRACE("%s\n", msg);
  89     }
  90 }
  91 #endif
  92
  93 /**
  94  *
  95  * Main Specs:
  96  *  http://www.eagercon.com/dwarf/dwarf3std.htm
  97  *  http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf
  98  *
  99  * dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html
 100  *
 101  * example of projects who do dwarf2 parsing:
 102  *  http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2
 103  *  http://elis.ugent.be/diota/log/ltrace_elf.c
 104  */
 105 #include "dwarf.h"
 106
 107 /**
 108  * Parsers
 109  */
 110
 111 typedef struct dwarf2_abbrev_entry_attr_s
 112 {
 113   unsigned long attribute;
 114   unsigned long form;
 115   struct dwarf2_abbrev_entry_attr_s* next;
 116 } dwarf2_abbrev_entry_attr_t;
 117
 118 typedef struct dwarf2_abbrev_entry_s
 119 {
 120     unsigned long entry_code;
 121     unsigned long tag;
 122     unsigned char have_child;
 123     unsigned num_attr;
 124     dwarf2_abbrev_entry_attr_t* attrs;
 125 } dwarf2_abbrev_entry_t;
 126
 127 struct dwarf2_block
 128 {
 129     unsigned                    size;
 130     const unsigned char*        ptr;
 131 };
 132
 133 struct attribute
 134 {
 135     unsigned long               form;
 136     union
 137     {
 138         unsigned long                   uvalue;
 139         long                            svalue;
 140         const char*                     string;
 141         struct dwarf2_block             block;
 142     } u;
 143 };
 144
 145 typedef struct dwarf2_debug_info_s
 146 {
 147     const dwarf2_abbrev_entry_t*abbrev;
 148     struct symt*                symt;
 149     const unsigned char**       data;
 150     struct vector               children;
 151 } dwarf2_debug_info_t;
 152
 153
 154 typedef struct dwarf2_section_s
 155 {
 156     const unsigned char*        address;
 157     unsigned                    size;
 158 } dwarf2_section_t;
 159
 160 enum dwarf2_sections {section_debug, section_string, section_abbrev, section_line, section_max};
 161
 162 typedef struct dwarf2_traverse_context_s
 163 {
 164     const unsigned char*        data;
 165     const unsigned char*        start_data;
 166     const unsigned char*        end_data;
 167     unsigned char               word_size;
 168 } dwarf2_traverse_context_t;
 169
 170 typedef struct dwarf2_parse_context_s
 171 {
 172     const dwarf2_section_t*     sections;
 173     unsigned                    section;
 174     struct pool                 pool;
 175     struct module*              module;
 176     const struct elf_thunk_area*thunks;
 177     struct sparse_array         abbrev_table;
 178     struct sparse_array         debug_info_table;
 179     unsigned long               ref_offset;
 180     unsigned char               word_size;
 181 } dwarf2_parse_context_t;
 182
 183 /* forward declarations */
 184 static struct symt* dwarf2_parse_enumeration_type(dwarf2_parse_context_t* ctx, dwarf2_debug_info_t* entry);
 185
 186 static unsigned char dwarf2_get_byte(const unsigned char* ptr)
 187 {
 188     return *ptr;
 189 }
 190
 191 static unsigned char dwarf2_parse_byte(dwarf2_traverse_context_t* ctx)
 192 {
 193     unsigned char uvalue = dwarf2_get_byte(ctx->data);
 194     ctx->data += 1;
 195     return uvalue;
 196 }
 197
 198 static unsigned short dwarf2_get_u2(const unsigned char* ptr)
 199 {
 200     return *(const unsigned short*)ptr;
 201 }
 202
 203 static unsigned short dwarf2_parse_u2(dwarf2_traverse_context_t* ctx)
 204 {
 205     unsigned short uvalue = dwarf2_get_u2(ctx->data);
 206     ctx->data += 2;
 207     return uvalue;
 208 }
 209
 210 static unsigned long dwarf2_get_u4(const unsigned char* ptr)
 211 {
 212     return *(const unsigned long*)ptr;
 213 }
 214
 215 static unsigned long dwarf2_parse_u4(dwarf2_traverse_context_t* ctx)
 216 {
 217     unsigned long uvalue = dwarf2_get_u4(ctx->data);
 218     ctx->data += 4;
 219     return uvalue;
 220 }
 221
 222 static unsigned long dwarf2_get_leb128_as_unsigned(const unsigned char* ptr, const unsigned char** end)
 223 {
 224     unsigned long ret = 0;
 225     unsigned char byte;
 226     unsigned shift = 0;
 227
 228     do
 229     {
 230         byte = dwarf2_get_byte(ptr++);
 231         ret |= (byte & 0x7f) << shift;
 232         shift += 7;
 233     } while (byte & 0x80);
 234
 235     if (end) *end = ptr;
 236     return ret;
 237 }
 238
 239 static unsigned long dwarf2_leb128_as_unsigned(dwarf2_traverse_context_t* ctx)
 240 {
 241     unsigned long ret;
 242
 243     assert(ctx);
 244
 245     ret = dwarf2_get_leb128_as_unsigned(ctx->data, &ctx->data);
 246
 247     return ret;
 248 }
 249
 250 static long dwarf2_get_leb128_as_signed(const unsigned char* ptr, const unsigned char** end)
 251 {
 252     long ret = 0;
 253     unsigned char byte;
 254     unsigned shift = 0;
 255     const unsigned size = sizeof(int) * 8;
 256
 257     do
 258     {
 259         byte = dwarf2_get_byte(ptr++);
 260         ret |= (byte & 0x7f) << shift;
 261         shift += 7;
 262     } while (byte & 0x80);
 263     if (end) *end = ptr;
 264
 265     /* as spec: sign bit of byte is 2nd high order bit (80x40)
 266      *  -> 0x80 is used as flag.
 267      */
 268     if ((shift < size) && (byte & 0x40))
 269     {
 270         ret |= - (1 << shift);
 271     }
 272     return ret;
 273 }
 274
 275 static long dwarf2_leb128_as_signed(dwarf2_traverse_context_t* ctx)
 276 {
 277     long ret = 0;
 278
 279     assert(ctx);
 280
 281     ret = dwarf2_get_leb128_as_signed(ctx->data, &ctx->data);
 282     return ret;
 283 }
 284
 285 static unsigned dwarf2_leb128_length(const dwarf2_traverse_context_t* ctx)
 286 {
 287     unsigned    ret;
 288     for (ret = 0; ctx->data[ret] & 0x80; ret++);
 289     return ret + 1;
 290 }
 291
 292 static unsigned long dwarf2_get_addr(const unsigned char* ptr, unsigned word_size)
 293 {
 294     unsigned long ret;
 295
 296     switch (word_size)
 297     {
 298     case 4:
 299         ret = dwarf2_get_u4(ptr);
 300         break;
 301     default:
 302         FIXME("Unsupported Word Size %u\n", word_size);
 303         ret = 0;
 304     }
 305     return ret;
 306 }
 307
 308 static unsigned long dwarf2_parse_addr(dwarf2_traverse_context_t* ctx)
 309 {
 310     unsigned long ret = dwarf2_get_addr(ctx->data, ctx->word_size);
 311     ctx->data += ctx->word_size;
 312     return ret;
 313 }
 314
 315 static const char* dwarf2_debug_traverse_ctx(const dwarf2_traverse_context_t* ctx)
 316 {
 317     return wine_dbg_sprintf("ctx(%p)", ctx->data);
 318 }
 319
 320 static const char* dwarf2_debug_ctx(const dwarf2_parse_context_t* ctx)
 321 {
 322     return wine_dbg_sprintf("ctx(%p,%s)", ctx, ctx->module->module.ModuleName);
 323 }
 324
 325 static const char* dwarf2_debug_di(dwarf2_debug_info_t* di)
 326 {
 327     return wine_dbg_sprintf("debug_info(abbrev:%p,symt:%p)",
 328                             di->abbrev, di->symt);
 329 }
 330
 331 static dwarf2_abbrev_entry_t*
 332 dwarf2_abbrev_table_find_entry(struct sparse_array* abbrev_table,
 333                                unsigned long entry_code)
 334 {
 335     assert( NULL != abbrev_table );
 336     return sparse_array_find(abbrev_table, entry_code);
 337 }
 338
 339 static void dwarf2_parse_abbrev_set(dwarf2_traverse_context_t* abbrev_ctx,
 340                                     struct sparse_array* abbrev_table,
 341                                     struct pool* pool)
 342 {
 343     unsigned long entry_code;
 344     dwarf2_abbrev_entry_t* abbrev_entry;
 345     dwarf2_abbrev_entry_attr_t* new = NULL;
 346     dwarf2_abbrev_entry_attr_t* last = NULL;
 347     unsigned long attribute;
 348     unsigned long form;
 349
 350     assert( NULL != abbrev_ctx );
 351
 352     TRACE("%s, end at %p\n",
 353           dwarf2_debug_traverse_ctx(abbrev_ctx), abbrev_ctx->end_data);
 354
 355     sparse_array_init(abbrev_table, sizeof(dwarf2_abbrev_entry_t), 32);
 356     while (abbrev_ctx->data < abbrev_ctx->end_data)
 357     {
 358         TRACE("now at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx));
 359         entry_code = dwarf2_leb128_as_unsigned(abbrev_ctx);
 360         TRACE("found entry_code %lu\n", entry_code);
 361         if (!entry_code)
 362         {
 363             TRACE("NULL entry code at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx));
 364             break;
 365         }
 366         abbrev_entry = sparse_array_add(abbrev_table, entry_code, pool);
 367         assert( NULL != abbrev_entry );
 368
 369         abbrev_entry->entry_code = entry_code;
 370         abbrev_entry->tag        = dwarf2_leb128_as_unsigned(abbrev_ctx);
 371         abbrev_entry->have_child = dwarf2_parse_byte(abbrev_ctx);
 372         abbrev_entry->attrs      = NULL;
 373         abbrev_entry->num_attr   = 0;
 374
 375         TRACE("table:(%p,#%u) entry_code(%lu) tag(0x%lx) have_child(%u) -> %p\n",
 376               abbrev_table, sparse_array_length(abbrev_table),
 377               entry_code, abbrev_entry->tag, abbrev_entry->have_child, abbrev_entry);
 378
 379         last = NULL;
 380         while (1)
 381         {
 382             attribute = dwarf2_leb128_as_unsigned(abbrev_ctx);
 383             form = dwarf2_leb128_as_unsigned(abbrev_ctx);
 384             if (!attribute) break;
 385
 386             new = pool_alloc(pool, sizeof(dwarf2_abbrev_entry_attr_t));
 387             assert(new);
 388
 389             new->attribute = attribute;
 390             new->form      = form;
 391             new->next      = NULL;
 392             if (abbrev_entry->attrs)    last->next = new;
 393             else                        abbrev_entry->attrs = new;
 394             last = new;
 395             abbrev_entry->num_attr++;
 396         }
 397     }
 398     TRACE("found %u entries\n", sparse_array_length(abbrev_table));
 399 }
 400
 401 static void dwarf2_swallow_attribute(dwarf2_traverse_context_t* ctx,
 402                                      const dwarf2_abbrev_entry_attr_t* abbrev_attr)
 403 {
 404     unsigned    step;
 405
 406     TRACE("(attr:0x%lx,form:0x%lx)\n", abbrev_attr->attribute, abbrev_attr->form);
 407
 408     switch (abbrev_attr->form)
 409     {
 410     case DW_FORM_ref_addr:
 411     case DW_FORM_addr:   step = ctx->word_size; break;
 412     case DW_FORM_flag:
 413     case DW_FORM_data1:
 414     case DW_FORM_ref1:   step = 1; break;
 415     case DW_FORM_data2:
 416     case DW_FORM_ref2:   step = 2; break;
 417     case DW_FORM_data4:
 418     case DW_FORM_ref4:
 419     case DW_FORM_strp:   step = 4; break;
 420     case DW_FORM_data8:
 421     case DW_FORM_ref8:   step = 8; break;
 422     case DW_FORM_sdata:
 423     case DW_FORM_ref_udata:
 424     case DW_FORM_udata:  step = dwarf2_leb128_length(ctx); break;
 425     case DW_FORM_string: step = strlen((const char*)ctx->data) + 1; break;
 426     case DW_FORM_block:  step = dwarf2_leb128_as_unsigned(ctx); break;
 427     case DW_FORM_block1: step = dwarf2_parse_byte(ctx); break;
 428     case DW_FORM_block2: step = dwarf2_parse_u2(ctx); break;
 429     case DW_FORM_block4: step = dwarf2_parse_u4(ctx); break;
 430     default:
 431         FIXME("Unhandled attribute form %lx\n", abbrev_attr->form);
 432         return;
 433     }
 434     ctx->data += step;
 435 }
 436
 437 static BOOL dwarf2_find_attribute(const dwarf2_parse_context_t* ctx,
 438                                   const dwarf2_debug_info_t* di,
 439                                   unsigned at, struct attribute* attr)
 440 {
 441     unsigned                    i;
 442     dwarf2_abbrev_entry_attr_t* abbrev_attr;
 443
 444     for (i = 0, abbrev_attr = di->abbrev->attrs; abbrev_attr; i++, abbrev_attr = abbrev_attr->next)
 445     {
 446         if (abbrev_attr->attribute == at)
 447         {
 448             attr->form = abbrev_attr->form;
 449             switch (attr->form)
 450             {
 451             case DW_FORM_ref_addr:
 452             case DW_FORM_addr:
 453                 attr->u.uvalue = dwarf2_get_addr(di->data[i], ctx->word_size);
 454                 TRACE("addr<0x%lx>\n", attr->u.uvalue);
 455                 break;
 456
 457             case DW_FORM_flag:
 458                 attr->u.uvalue = dwarf2_get_byte(di->data[i]);
 459                 TRACE("flag<0x%lx>\n", attr->u.uvalue);
 460                 break;
 461
 462             case DW_FORM_data1:
 463                 attr->u.uvalue = dwarf2_get_byte(di->data[i]);
 464                 TRACE("data1<%lu>\n", attr->u.uvalue);
 465                 break;
 466
 467             case DW_FORM_data2:
 468                 attr->u.uvalue = dwarf2_get_u2(di->data[i]);
 469                 TRACE("data2<%lu>\n", attr->u.uvalue);
 470                 break;
 471
 472             case DW_FORM_data4:
 473                 attr->u.uvalue = dwarf2_get_u4(di->data[i]);
 474                 TRACE("data4<%lu>\n", attr->u.uvalue);
 475                 break;
 476
 477             case DW_FORM_data8:
 478                 FIXME("Unhandled 64bits support\n");
 479                 break;
 480
 481             case DW_FORM_ref1:
 482                 attr->u.uvalue = ctx->ref_offset + dwarf2_get_byte(di->data[i]);
 483                 TRACE("ref1<0x%lx>\n", attr->u.uvalue);
 484                 break;
 485
 486             case DW_FORM_ref2:
 487                 attr->u.uvalue = ctx->ref_offset + dwarf2_get_u2(di->data[i]);
 488                 TRACE("ref2<0x%lx>\n", attr->u.uvalue);
 489                 break;
 490
 491             case DW_FORM_ref4:
 492                 attr->u.uvalue = ctx->ref_offset + dwarf2_get_u4(di->data[i]);
 493                 TRACE("ref4<0x%lx>\n", attr->u.uvalue);
 494                 break;
 495
 496             case DW_FORM_ref8:
 497                 FIXME("Unhandled 64 bit support\n");
 498                 break;
 499
 500             case DW_FORM_sdata:
 501                 attr->u.svalue = dwarf2_get_leb128_as_signed(di->data[i], NULL);
 502                 break;
 503
 504             case DW_FORM_ref_udata:
 505                 attr->u.uvalue = dwarf2_get_leb128_as_unsigned(di->data[i], NULL);
 506                 break;
 507
 508             case DW_FORM_udata:
 509                 attr->u.uvalue = dwarf2_get_leb128_as_unsigned(di->data[i], NULL);
 510                 break;
 511
 512             case DW_FORM_string:
 513                 attr->u.string = (const char *)di->data[i];
 514                 TRACE("string<%s>\n", attr->u.string);
 515                 break;
 516
 517             case DW_FORM_strp:
 518             {
 519                 unsigned long offset = dwarf2_get_u4(di->data[i]);
 520                 attr->u.string = (const char*)ctx->sections[section_string].address + offset;
 521             }
 522             TRACE("strp<%s>\n", attr->u.string);
 523             break;
 524             case DW_FORM_block:
 525                 attr->u.block.size = dwarf2_get_leb128_as_unsigned(di->data[i], &attr->u.block.ptr);
 526                 break;
 527
 528             case DW_FORM_block1:
 529                 attr->u.block.size = dwarf2_get_byte(di->data[i]);
 530                 attr->u.block.ptr  = di->data[i] + 1;
 531                 break;
 532
 533             case DW_FORM_block2:
 534                 attr->u.block.size = dwarf2_get_u2(di->data[i]);
 535                 attr->u.block.ptr  = di->data[i] + 2;
 536                 break;
 537
 538             case DW_FORM_block4:
 539                 attr->u.block.size = dwarf2_get_u4(di->data[i]);
 540                 attr->u.block.ptr  = di->data[i] + 4;
 541                 break;
 542
 543             default:
 544                 FIXME("Unhandled attribute form %lx\n", abbrev_attr->form);
 545                 break;
 546             }
 547             return TRUE;
 548         }
 549     }
 550     return FALSE;
 551 }
 552
 553 static void dwarf2_find_name(dwarf2_parse_context_t* ctx,
 554                              const dwarf2_debug_info_t* di,
 555                              struct attribute* attr, const char* pfx)
 556 {
 557     static      int index;
 558
 559     if (!dwarf2_find_attribute(ctx, di, DW_AT_name, attr))
 560     {
 561         char* tmp = pool_alloc(&ctx->pool, strlen(pfx) + 16);
 562         if (tmp) sprintf(tmp, "%s_%d", pfx, index++);
 563         attr->u.string = tmp;
 564     }
 565 }
 566
 567 static void dwarf2_load_one_entry(dwarf2_parse_context_t*, dwarf2_debug_info_t*,
 568                                   struct symt_compiland*);
 569
 570 #define Wine_DW_no_register     0x7FFFFFFF
 571 #define Wine_DW_frame_register  0x7FFFFFFE
 572 #define Wine_DW_register_deref  0x80000000
 573
 574 static BOOL dwarf2_compute_location(dwarf2_parse_context_t* ctx,
 575                                     dwarf2_debug_info_t* di,
 576                                     unsigned long dw,
 577                                     unsigned long* offset, int* in_register)
 578 {
 579     unsigned long loc[64];
 580     unsigned stk;
 581     struct attribute xloc;
 582
 583     if (!dwarf2_find_attribute(ctx, di, dw, &xloc)) return FALSE;
 584
 585     if (in_register) *in_register = Wine_DW_no_register;
 586
 587     switch (xloc.form)
 588     {
 589     case DW_FORM_data1: case DW_FORM_data2:
 590     case DW_FORM_data4: case DW_FORM_data8:
 591     case DW_FORM_udata: case DW_FORM_sdata:
 592         /* we've got a constant */
 593         *offset = xloc.u.uvalue;
 594         return TRUE;
 595     }
 596     /* assume we have a block form */
 597     loc[stk = 0] = 0;
 598
 599     if (xloc.u.block.size)
 600     {
 601         dwarf2_traverse_context_t  lctx;
 602         unsigned char op;
 603         BOOL piece_found = FALSE;
 604
 605         lctx.data = xloc.u.block.ptr;
 606         lctx.end_data = xloc.u.block.ptr + xloc.u.block.size;
 607         lctx.word_size = ctx->word_size;
 608
 609         while (lctx.data < lctx.end_data)
 610         {
 611             op = dwarf2_parse_byte(&lctx);
 612             switch (op)
 613             {
 614             case DW_OP_addr:    loc[++stk] = dwarf2_parse_addr(&lctx); break;
 615             case DW_OP_const1u: loc[++stk] = dwarf2_parse_byte(&lctx); break;
 616             case DW_OP_const1s: loc[++stk] = (long)(signed char)dwarf2_parse_byte(&lctx); break;
 617             case DW_OP_const2u: loc[++stk] = dwarf2_parse_u2(&lctx); break;
 618             case DW_OP_const2s: loc[++stk] = (long)(short)dwarf2_parse_u2(&lctx); break;
 619             case DW_OP_const4u: loc[++stk] = dwarf2_parse_u4(&lctx); break;
 620             case DW_OP_const4s: loc[++stk] = dwarf2_parse_u4(&lctx); break;
 621             case DW_OP_constu:  loc[++stk] = dwarf2_leb128_as_unsigned(&lctx); break;
 622             case DW_OP_consts:  loc[++stk] = dwarf2_leb128_as_signed(&lctx); break;
 623             case DW_OP_plus_uconst:
 624                                 loc[stk] += dwarf2_leb128_as_unsigned(&lctx); break;
 625             case DW_OP_reg0:  case DW_OP_reg1:  case DW_OP_reg2:  case DW_OP_reg3:
 626             case DW_OP_reg4:  case DW_OP_reg5:  case DW_OP_reg6:  case DW_OP_reg7:
 627             case DW_OP_reg8:  case DW_OP_reg9:  case DW_OP_reg10: case DW_OP_reg11:
 628             case DW_OP_reg12: case DW_OP_reg13: case DW_OP_reg14: case DW_OP_reg15:
 629             case DW_OP_reg16: case DW_OP_reg17: case DW_OP_reg18: case DW_OP_reg19:
 630             case DW_OP_reg20: case DW_OP_reg21: case DW_OP_reg22: case DW_OP_reg23:
 631             case DW_OP_reg24: case DW_OP_reg25: case DW_OP_reg26: case DW_OP_reg27:
 632             case DW_OP_reg28: case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31:
 633             case DW_OP_breg0:  case DW_OP_breg1:  case DW_OP_breg2:  case DW_OP_breg3:
 634             case DW_OP_breg4:  case DW_OP_breg5:  case DW_OP_breg6:  case DW_OP_breg7:
 635             case DW_OP_breg8:  case DW_OP_breg9:  case DW_OP_breg10: case DW_OP_breg11:
 636             case DW_OP_breg12: case DW_OP_breg13: case DW_OP_breg14: case DW_OP_breg15:
 637             case DW_OP_breg16: case DW_OP_breg17: case DW_OP_breg18: case DW_OP_breg19:
 638             case DW_OP_breg20: case DW_OP_breg21: case DW_OP_breg22: case DW_OP_breg23:
 639             case DW_OP_breg24: case DW_OP_breg25: case DW_OP_breg26: case DW_OP_breg27:
 640             case DW_OP_breg28: case DW_OP_breg29: case DW_OP_breg30: case DW_OP_breg31:
 641                 if (in_register)
 642                 {
 643                     /* dbghelp APIs don't know how to cope with this anyway
 644                      * (for example 'long long' stored in two registers)
 645                      * FIXME: We should tell winedbg how to deal with it (sigh)
 646                      */
 647                     if (!piece_found || (op - DW_OP_reg0 != *in_register + 1))
 648                     {
 649                         if (*in_register != Wine_DW_no_register)
 650                             FIXME("Only supporting one reg (%d -> %d)\n",
 651                                   *in_register, op - DW_OP_reg0);
 652                         *in_register = op - DW_OP_reg0;
 653                     }
 654                 }
 655                 else FIXME("Found register, while not expecting it\n");
 656                 if (op >= DW_OP_breg0 && op <= DW_OP_breg31)
 657                 {
 658                     loc[++stk] = dwarf2_leb128_as_signed(&lctx);
 659                     if (in_register) *in_register |= Wine_DW_register_deref;
 660                 }
 661                 break;
 662             case DW_OP_fbreg:
 663                 if (in_register)
 664                 {
 665                     if (*in_register != Wine_DW_no_register)
 666                         FIXME("Only supporting one reg (%d -> -2)\n", *in_register);
 667                     *in_register = Wine_DW_frame_register | Wine_DW_register_deref;
 668                 }
 669                 else FIXME("Found register, while not expecting it\n");
 670                 loc[++stk] = dwarf2_leb128_as_signed(&lctx);
 671                 break;
 672             case DW_OP_piece:
 673                 {
 674                     unsigned sz = dwarf2_leb128_as_unsigned(&lctx);
 675                     WARN("Not handling OP_piece directly (size=%d)\n", sz);
 676                     piece_found = TRUE;
 677                 }
 678                 break;
 679             default:
 680                 FIXME("Unhandled attr op: %x\n", op);
 681                 return loc[stk];
 682             }
 683         }
 684     }
 685     *offset = loc[stk];
 686     return TRUE;
 687 }
 688
 689 static struct symt* dwarf2_lookup_type(dwarf2_parse_context_t* ctx,
 690                                        const dwarf2_debug_info_t* di)
 691 {
 692     struct attribute    attr;
 693
 694     if (dwarf2_find_attribute(ctx, di, DW_AT_type, &attr))
 695     {
 696         dwarf2_debug_info_t*    type;
 697
 698         type = sparse_array_find(&ctx->debug_info_table, attr.u.uvalue);
 699         if (!type) FIXME("Unable to find back reference to type %lx\n", attr.u.uvalue);
 700         if (!type->symt)
 701         {
 702             /* load the debug info entity */
 703             dwarf2_load_one_entry(ctx, type, NULL);
 704         }
 705         return type->symt;
 706     }
 707     return NULL;
 708 }
 709
 710 /******************************************************************
 711  *              dwarf2_read_one_debug_info
 712  *
 713  * Loads into memory one debug info entry, and recursively its children (if any)
 714  */
 715 static BOOL dwarf2_read_one_debug_info(dwarf2_parse_context_t* ctx,
 716                                        dwarf2_traverse_context_t* traverse,
 717                                        dwarf2_debug_info_t** pdi)
 718 {
 719     const dwarf2_abbrev_entry_t*abbrev;
 720     unsigned long               entry_code;
 721     unsigned long               offset;
 722     dwarf2_debug_info_t*        di;
 723     dwarf2_debug_info_t*        child;
 724     dwarf2_debug_info_t**       where;
 725     dwarf2_abbrev_entry_attr_t* attr;
 726     unsigned                    i;
 727     struct attribute            sibling;
 728
 729     offset = traverse->data - ctx->sections[ctx->section].address;
 730     entry_code = dwarf2_leb128_as_unsigned(traverse);
 731     TRACE("found entry_code %lu at 0x%lx\n", entry_code, offset);
 732     if (!entry_code)
 733     {
 734         *pdi = NULL;
 735         return TRUE;
 736     }
 737     abbrev = dwarf2_abbrev_table_find_entry(&ctx->abbrev_table, entry_code);
 738     if (!abbrev)
 739     {
 740         WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code, offset);
 741         return FALSE;
 742     }
 743     di = sparse_array_add(&ctx->debug_info_table, offset, &ctx->pool);
 744     if (!di) return FALSE;
 745     di->abbrev = abbrev;
 746     di->symt   = NULL;
 747
 748     if (abbrev->num_attr)
 749     {
 750         di->data = pool_alloc(&ctx->pool, abbrev->num_attr * sizeof(const char*));
 751         for (i = 0, attr = abbrev->attrs; attr; i++, attr = attr->next)
 752         {
 753             di->data[i] = traverse->data;
 754             dwarf2_swallow_attribute(traverse, attr);
 755         }
 756     }
 757     else di->data = NULL;
 758     if (abbrev->have_child)
 759     {
 760         vector_init(&di->children, sizeof(dwarf2_debug_info_t*), 16);
 761         while (traverse->data < traverse->end_data)
 762         {
 763             if (!dwarf2_read_one_debug_info(ctx, traverse, &child)) return FALSE;
 764             if (!child) break;
 765             where = vector_add(&di->children, &ctx->pool);
 766             if (!where) return FALSE;
 767             *where = child;
 768         }
 769     }
 770     if (dwarf2_find_attribute(ctx, di, DW_AT_sibling, &sibling) &&
 771         traverse->data != ctx->sections[ctx->section].address + sibling.u.uvalue)
 772     {
 773         WARN("setting cursor for %s to next sibling <0x%lx>\n",
 774              dwarf2_debug_traverse_ctx(traverse), sibling.u.uvalue);
 775         traverse->data = ctx->sections[ctx->section].address + sibling.u.uvalue;
 776     }
 777     *pdi = di;
 778     return TRUE;
 779 }
 780
 781 static struct symt* dwarf2_parse_base_type(dwarf2_parse_context_t* ctx,
 782                                            dwarf2_debug_info_t* di)
 783 {
 784     struct attribute name;
 785     struct attribute size;
 786     struct attribute encoding;
 787     enum BasicType bt;
 788
 789     if (di->symt) return di->symt;
 790
 791     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 792
 793     dwarf2_find_name(ctx, di, &name, "base_type");
 794     if (!dwarf2_find_attribute(ctx, di, DW_AT_byte_size, &size)) size.u.uvalue = 0;
 795     if (!dwarf2_find_attribute(ctx, di, DW_AT_encoding, &encoding)) encoding.u.uvalue = DW_ATE_void;
 796
 797     switch (encoding.u.uvalue)
 798     {
 799     case DW_ATE_void:           bt = btVoid; break;
 800     case DW_ATE_address:        bt = btULong; break;
 801     case DW_ATE_boolean:        bt = btBool; break;
 802     case DW_ATE_complex_float:  bt = btComplex; break;
 803     case DW_ATE_float:          bt = btFloat; break;
 804     case DW_ATE_signed:         bt = btInt; break;
 805     case DW_ATE_unsigned:       bt = btUInt; break;
 806     case DW_ATE_signed_char:    bt = btChar; break;
 807     case DW_ATE_unsigned_char:  bt = btChar; break;
 808     default:                    bt = btNoType; break;
 809     }
 810     di->symt = &symt_new_basic(ctx->module, bt, name.u.string, size.u.uvalue)->symt;
 811     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 812     return di->symt;
 813 }
 814
 815 static struct symt* dwarf2_parse_typedef(dwarf2_parse_context_t* ctx,
 816                                          dwarf2_debug_info_t* di)
 817 {
 818     struct symt*        ref_type;
 819     struct attribute    name;
 820
 821     if (di->symt) return di->symt;
 822
 823     TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), di->abbrev->entry_code);
 824
 825     dwarf2_find_name(ctx, di, &name, "typedef");
 826     ref_type = dwarf2_lookup_type(ctx, di);
 827
 828     if (name.u.string)
 829     {
 830         di->symt = &symt_new_typedef(ctx->module, ref_type, name.u.string)->symt;
 831     }
 832     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 833     return di->symt;
 834 }
 835
 836 static struct symt* dwarf2_parse_pointer_type(dwarf2_parse_context_t* ctx,
 837                                               dwarf2_debug_info_t* di)
 838 {
 839     struct symt*        ref_type;
 840     struct attribute    size;
 841
 842     if (di->symt) return di->symt;
 843
 844     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 845
 846     if (!dwarf2_find_attribute(ctx, di, DW_AT_byte_size, &size)) size.u.uvalue = 0;
 847     ref_type = dwarf2_lookup_type(ctx, di);
 848
 849     di->symt = &symt_new_pointer(ctx->module, ref_type)->symt;
 850     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 851     return di->symt;
 852 }
 853
 854 static struct symt* dwarf2_parse_array_type(dwarf2_parse_context_t* ctx,
 855                                             dwarf2_debug_info_t* di)
 856 {
 857     struct symt* ref_type;
 858     struct symt* idx_type = NULL;
 859     struct attribute min, max, cnt;
 860     dwarf2_debug_info_t** pchild = NULL;
 861     dwarf2_debug_info_t* child;
 862
 863     if (di->symt) return di->symt;
 864
 865     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 866
 867     if (!di->abbrev->have_child)
 868     {
 869         FIXME("array without range information\n");
 870         return NULL;
 871     }
 872     ref_type = dwarf2_lookup_type(ctx, di);
 873
 874     while ((pchild = vector_iter_up(&di->children, pchild)))
 875     {
 876         child = *pchild;
 877         switch (child->abbrev->tag)
 878         {
 879         case DW_TAG_subrange_type:
 880             idx_type = dwarf2_lookup_type(ctx, child);
 881             if (!dwarf2_find_attribute(ctx, child, DW_AT_lower_bound, &min))
 882                 min.u.uvalue = 0;
 883             if (!dwarf2_find_attribute(ctx, child, DW_AT_upper_bound, &max))
 884                 max.u.uvalue = 0;
 885             if (dwarf2_find_attribute(ctx, child, DW_AT_count, &cnt))
 886                 max.u.uvalue = min.u.uvalue + cnt.u.uvalue;
 887             break;
 888         default:
 889             FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
 890                   child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 891             break;
 892         }
 893     }
 894     di->symt = &symt_new_array(ctx->module, min.u.uvalue, max.u.uvalue, ref_type, idx_type)->symt;
 895     return di->symt;
 896 }
 897
 898 static struct symt* dwarf2_parse_const_type(dwarf2_parse_context_t* ctx,
 899                                             dwarf2_debug_info_t* di)
 900 {
 901     struct symt* ref_type;
 902
 903     if (di->symt) return di->symt;
 904
 905     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 906
 907     ref_type = dwarf2_lookup_type(ctx, di);
 908     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 909     di->symt = ref_type;
 910
 911     return ref_type;
 912 }
 913
 914 static struct symt* dwarf2_parse_volatile_type(dwarf2_parse_context_t* ctx,
 915                                                dwarf2_debug_info_t* di)
 916 {
 917     struct symt* ref_type;
 918
 919     if (di->symt) return di->symt;
 920
 921     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 922
 923     ref_type = dwarf2_lookup_type(ctx, di);
 924     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 925     di->symt = ref_type;
 926
 927     return ref_type;
 928 }
 929
 930 static struct symt* dwarf2_parse_reference_type(dwarf2_parse_context_t* ctx,
 931                                                 dwarf2_debug_info_t* di)
 932 {
 933     struct symt* ref_type = NULL;
 934
 935     if (di->symt) return di->symt;
 936
 937     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 938
 939     ref_type = dwarf2_lookup_type(ctx, di);
 940     /* FIXME: for now, we hard-wire C++ references to pointers */
 941     di->symt = &symt_new_pointer(ctx->module, ref_type)->symt;
 942
 943     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 944
 945     return di->symt;
 946 }
 947
 948 static void dwarf2_parse_udt_member(dwarf2_parse_context_t* ctx,
 949                                     dwarf2_debug_info_t* di,
 950                                     struct symt_udt* parent)
 951 {
 952     struct symt* elt_type;
 953     struct attribute name;
 954     unsigned long offset = 0;
 955     struct attribute bit_size;
 956     struct attribute bit_offset;
 957
 958     assert(parent);
 959
 960     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 961
 962     dwarf2_find_name(ctx, di, &name, "udt_member");
 963     elt_type = dwarf2_lookup_type(ctx, di);
 964     if (dwarf2_compute_location(ctx, di, DW_AT_data_member_location, &offset, NULL))
 965         TRACE("found member_location at %s -> %lu\n", dwarf2_debug_ctx(ctx), offset);
 966     if (!dwarf2_find_attribute(ctx, di, DW_AT_bit_size, &bit_size))   bit_size.u.uvalue = 0;
 967     if (dwarf2_find_attribute(ctx, di, DW_AT_bit_offset, &bit_offset))
 968     {
 969         /* FIXME: we should only do this when implementation is LSB (which is
 970          * the case on i386 processors)
 971          */
 972         struct attribute nbytes;
 973         if (!dwarf2_find_attribute(ctx, di, DW_AT_byte_size, &nbytes))
 974         {
 975             DWORD64     size;
 976             nbytes.u.uvalue = symt_get_info(elt_type, TI_GET_LENGTH, &size) ? (unsigned long)size : 0;
 977         }
 978         bit_offset.u.uvalue = nbytes.u.uvalue * 8 - bit_offset.u.uvalue - bit_size.u.uvalue;
 979     }
 980     else bit_offset.u.uvalue = 0;
 981     symt_add_udt_element(ctx->module, parent, name.u.string, elt_type,
 982                          (offset << 3) + bit_offset.u.uvalue, bit_size.u.uvalue);
 983
 984     if (di->abbrev->have_child) FIXME("Unsupported children\n");
 985 }
 986
 987 static struct symt* dwarf2_parse_udt_type(dwarf2_parse_context_t* ctx,
 988                                           dwarf2_debug_info_t* di,
 989                                           enum UdtKind udt)
 990 {
 991     struct attribute    name;
 992     struct attribute    size;
 993
 994     if (di->symt) return di->symt;
 995
 996     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
 997
 998     dwarf2_find_name(ctx, di, &name, "udt");
 999     if (!dwarf2_find_attribute(ctx, di, DW_AT_byte_size, &size)) size.u.uvalue = 0;
1000
1001     di->symt = &symt_new_udt(ctx->module, name.u.string, size.u.uvalue, udt)->symt;
1002
1003     if (di->abbrev->have_child) /** any interest to not have child ? */
1004     {
1005         dwarf2_debug_info_t**   pchild = NULL;
1006         dwarf2_debug_info_t*    child;
1007
1008         while ((pchild = vector_iter_up(&di->children, pchild)))
1009         {
1010             child = *pchild;
1011
1012             switch (child->abbrev->tag)
1013             {
1014             case DW_TAG_member:
1015                 /* FIXME: should I follow the sibling stuff ?? */
1016                 dwarf2_parse_udt_member(ctx, child, (struct symt_udt*)di->symt);
1017                 break;
1018             case DW_TAG_enumeration_type:
1019                 dwarf2_parse_enumeration_type(ctx, child);
1020                 break;
1021             case DW_TAG_structure_type:
1022             case DW_TAG_class_type:
1023             case DW_TAG_union_type:
1024                 /* FIXME: we need to handle nested udt definitions */
1025                 break;
1026             default:
1027                 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1028                       child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1029                 break;
1030             }
1031         }
1032     }
1033
1034     return di->symt;
1035 }
1036
1037 static void dwarf2_parse_enumerator(dwarf2_parse_context_t* ctx,
1038                                     dwarf2_debug_info_t* di,
1039                                     struct symt_enum* parent)
1040 {
1041     struct attribute    name;
1042     struct attribute    value;
1043
1044     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1045
1046     dwarf2_find_name(ctx, di, &name, "enum_value");
1047     if (!dwarf2_find_attribute(ctx, di, DW_AT_const_value, &value)) value.u.svalue = 0;
1048     symt_add_enum_element(ctx->module, parent, name.u.string, value.u.svalue);
1049
1050     if (di->abbrev->have_child) FIXME("Unsupported children\n");
1051 }
1052
1053 static struct symt* dwarf2_parse_enumeration_type(dwarf2_parse_context_t* ctx,
1054                                                   dwarf2_debug_info_t* di)
1055 {
1056     struct attribute    name;
1057     struct attribute    size;
1058
1059     if (di->symt) return di->symt;
1060
1061     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1062
1063     dwarf2_find_name(ctx, di, &name, "enum");
1064     if (!dwarf2_find_attribute(ctx, di, DW_AT_byte_size, &size)) size.u.uvalue = 0;
1065
1066     di->symt = &symt_new_enum(ctx->module, name.u.string)->symt;
1067
1068     if (di->abbrev->have_child) /* any interest to not have child ? */
1069     {
1070         dwarf2_debug_info_t**   pchild = NULL;
1071         dwarf2_debug_info_t*    child;
1072
1073         /* FIXME: should we use the sibling stuff ?? */
1074         while ((pchild = vector_iter_up(&di->children, pchild)))
1075         {
1076             child = *pchild;
1077
1078             switch (child->abbrev->tag)
1079             {
1080             case DW_TAG_enumerator:
1081                 dwarf2_parse_enumerator(ctx, child, (struct symt_enum*)di->symt);
1082                 break;
1083             default:
1084                 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1085                       di->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1086             }
1087         }
1088     }
1089     return di->symt;
1090 }
1091
1092 static unsigned dwarf2_map_register(int regno)
1093 {
1094     unsigned    reg;
1095
1096     switch (regno)
1097     {
1098     case Wine_DW_no_register: FIXME("What the heck\n"); reg = 0; break;
1099     /* FIXME: this is a dirty hack */
1100     case Wine_DW_frame_register: reg = 0;          break;
1101     case  0: reg = CV_REG_EAX; break;
1102     case  1: reg = CV_REG_ECX; break;
1103     case  2: reg = CV_REG_EDX; break;
1104     case  3: reg = CV_REG_EBX; break;
1105     case  4: reg = CV_REG_ESP; break;
1106     case  5: reg = CV_REG_EBP; break;
1107     case  6: reg = CV_REG_ESI; break;
1108     case  7: reg = CV_REG_EDI; break;
1109     case  8: reg = CV_REG_EIP; break;
1110     case  9: reg = CV_REG_EFLAGS; break;
1111     case 10: reg = CV_REG_CS;  break;
1112     case 11: reg = CV_REG_SS;  break;
1113     case 12: reg = CV_REG_DS;  break;
1114     case 13: reg = CV_REG_ES;  break;
1115     case 14: reg = CV_REG_FS;  break;
1116     case 15: reg = CV_REG_GS;  break;
1117     case 16: case 17: case 18: case 19:
1118     case 20: case 21: case 22: case 23:
1119         reg = CV_REG_ST0 + regno - 16; break;
1120     case 24: reg = CV_REG_CTRL; break;
1121     case 25: reg = CV_REG_STAT; break;
1122     case 26: reg = CV_REG_TAG; break;
1123 /*
1124 reg: fiseg 27
1125 reg: fioff 28
1126 reg: foseg 29
1127 reg: fooff 30
1128 reg: fop   31
1129 */
1130     case 32: case 33: case 34: case 35:
1131     case 36: case 37: case 38: case 39:
1132         reg = CV_REG_XMM0 + regno - 32; break;
1133     case 40: reg = CV_REG_MXCSR; break;
1134     default:
1135         FIXME("Don't know how to map register %d\n", regno);
1136         return 0;
1137     }
1138     return reg;
1139 }
1140
1141 /* structure used to pass information around when parsing a subprogram */
1142 typedef struct dwarf2_subprogram_s
1143 {
1144     dwarf2_parse_context_t*     ctx;
1145     struct symt_compiland*      compiland;
1146     struct symt_function*       func;
1147     unsigned long               frame_offset;
1148     int                         frame_reg;
1149 } dwarf2_subprogram_t;
1150
1151 /******************************************************************
1152  *              dwarf2_parse_variable
1153  *
1154  * Parses any variable (parameter, local/global variable)
1155  */
1156 static void dwarf2_parse_variable(dwarf2_subprogram_t* subpgm,
1157                                   struct symt_block* block,
1158                                   dwarf2_debug_info_t* di)
1159 {
1160     struct symt* param_type;
1161     struct attribute name, value;
1162     unsigned long offset;
1163     int in_reg;
1164     BOOL is_pmt = di->abbrev->tag == DW_TAG_formal_parameter;
1165
1166     TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di));
1167
1168     param_type = dwarf2_lookup_type(subpgm->ctx, di);
1169     dwarf2_find_name(subpgm->ctx, di, &name, "parameter");
1170     if (dwarf2_compute_location(subpgm->ctx, di, DW_AT_location, &offset, &in_reg))
1171     {
1172         struct attribute ext;
1173
1174         TRACE("found parameter %s/%ld (reg=%d) at %s\n",
1175               name.u.string, offset, in_reg, dwarf2_debug_ctx(subpgm->ctx));
1176         switch (in_reg & ~Wine_DW_register_deref)
1177         {
1178         case Wine_DW_no_register:
1179             /* it's a global variable */
1180             /* FIXME: we don't handle it's scope yet */
1181             if (!dwarf2_find_attribute(subpgm->ctx, di, DW_AT_external, &ext))
1182                 ext.u.uvalue = 0;
1183             symt_new_global_variable(subpgm->ctx->module, subpgm->compiland,
1184                                      name.u.string, !ext.u.uvalue,
1185                                      subpgm->ctx->module->module.BaseOfImage + offset,
1186                                      0, param_type);
1187             break;
1188         case Wine_DW_frame_register:
1189             in_reg = subpgm->frame_reg | Wine_DW_register_deref;
1190             offset += subpgm->frame_offset;
1191             /* fall through */
1192         default:
1193             /* either a pmt/variable relative to frame pointer or
1194              * pmt/variable in a register
1195              */
1196             assert(subpgm->func);
1197             symt_add_func_local(subpgm->ctx->module, subpgm->func,
1198                                 is_pmt ? DataIsParam : DataIsLocal,
1199                                 dwarf2_map_register(in_reg & ~Wine_DW_register_deref),
1200                                 in_reg & Wine_DW_register_deref,
1201                                 offset, block, param_type, name.u.string);
1202             break;
1203         }
1204     }
1205     if (dwarf2_find_attribute(subpgm->ctx, di, DW_AT_const_value, &value))
1206     {
1207         FIXME("NIY: const value %08lx for %s\n", value.u.uvalue, name.u.string);
1208     }
1209     if (is_pmt && subpgm->func && subpgm->func->type)
1210         symt_add_function_signature_parameter(subpgm->ctx->module,
1211                                               (struct symt_function_signature*)subpgm->func->type,
1212                                               param_type);
1213
1214     if (di->abbrev->have_child) FIXME("Unsupported children\n");
1215 }
1216
1217 static void dwarf2_parse_subprogram_label(dwarf2_subprogram_t* subpgm,
1218                                           dwarf2_debug_info_t* di)
1219 {
1220     struct attribute    name;
1221     struct attribute    low_pc;
1222
1223     TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di));
1224
1225     if (!dwarf2_find_attribute(subpgm->ctx, di, DW_AT_low_pc, &low_pc)) low_pc.u.uvalue = 0;
1226     dwarf2_find_name(subpgm->ctx, di, &name, "label");
1227
1228     symt_add_function_point(subpgm->ctx->module, subpgm->func, SymTagLabel,
1229                             subpgm->ctx->module->module.BaseOfImage + low_pc.u.uvalue,
1230                             name.u.string);
1231 }
1232
1233 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t* subpgm,
1234                                           struct symt_block* block_parent,
1235                                           dwarf2_debug_info_t* di);
1236
1237 static void dwarf2_parse_inlined_subroutine(dwarf2_subprogram_t* subpgm,
1238                                             dwarf2_debug_info_t* di)
1239 {
1240     TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di));
1241
1242     /* FIXME: attributes to handle:
1243        DW_AT_low_pc:
1244        DW_AT_high_pc:
1245        DW_AT_name:
1246     */
1247
1248     if (di->abbrev->have_child) /** any interest to not have child ? */
1249     {
1250         dwarf2_debug_info_t**   pchild = NULL;
1251         dwarf2_debug_info_t*    child;
1252
1253         while ((pchild = vector_iter_up(&di->children, pchild)))
1254         {
1255             child = *pchild;
1256
1257             switch (child->abbrev->tag)
1258             {
1259             case DW_TAG_formal_parameter:
1260                 /* FIXME: this is not properly supported yet
1261                  * dwarf2_parse_subprogram_parameter(ctx, child, NULL);
1262                  */
1263                 break;
1264             case DW_TAG_variable:
1265                 /* FIXME:
1266                  * dwarf2_parse_variable(ctx, child);
1267                  */
1268                 break;
1269             case DW_TAG_lexical_block:
1270                 /* FIXME:
1271                    dwarf2_parse_subprogram_block(ctx, child, func);
1272                 */
1273                 break;
1274             case DW_TAG_inlined_subroutine:
1275                 /* FIXME */
1276                 dwarf2_parse_inlined_subroutine(subpgm, child);
1277                 break;
1278             case DW_TAG_label:
1279                 dwarf2_parse_subprogram_label(subpgm, child);
1280                 break;
1281             default:
1282                 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1283                       child->abbrev->tag, dwarf2_debug_ctx(subpgm->ctx),
1284                       dwarf2_debug_di(di));
1285             }
1286         }
1287     }
1288 }
1289
1290 static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t* subpgm,
1291                                           struct symt_block* parent_block,
1292                                           dwarf2_debug_info_t* di)
1293 {
1294     struct symt_block*  block;
1295     struct attribute    low_pc;
1296     struct attribute    high_pc;
1297
1298     TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di));
1299
1300     if (!dwarf2_find_attribute(subpgm->ctx, di, DW_AT_low_pc, &low_pc)) low_pc.u.uvalue = 0;
1301     if (!dwarf2_find_attribute(subpgm->ctx, di, DW_AT_high_pc, &high_pc)) high_pc.u.uvalue = 0;
1302
1303     block = symt_open_func_block(subpgm->ctx->module, subpgm->func, parent_block,
1304                                  low_pc.u.uvalue, high_pc.u.uvalue - low_pc.u.uvalue);
1305
1306     if (di->abbrev->have_child) /** any interest to not have child ? */
1307     {
1308         dwarf2_debug_info_t**   pchild = NULL;
1309         dwarf2_debug_info_t*    child;
1310
1311         while ((pchild = vector_iter_up(&di->children, pchild)))
1312         {
1313             child = *pchild;
1314
1315             switch (child->abbrev->tag)
1316             {
1317             case DW_TAG_inlined_subroutine:
1318                 dwarf2_parse_inlined_subroutine(subpgm, child);
1319                 break;
1320             case DW_TAG_variable:
1321                 dwarf2_parse_variable(subpgm, block, child);
1322                 break;
1323             case DW_TAG_lexical_block:
1324                 dwarf2_parse_subprogram_block(subpgm, block, child);
1325                 break;
1326             case DW_TAG_subprogram:
1327                 /* FIXME: likely a declaration (to be checked)
1328                  * skip it for now
1329                  */
1330                 break;
1331             case DW_TAG_formal_parameter:
1332                 /* FIXME: likely elements for exception handling (GCC flavor)
1333                  * Skip it for now
1334                  */
1335                 break;
1336             case DW_TAG_class_type:
1337             case DW_TAG_structure_type:
1338             case DW_TAG_union_type:
1339             case DW_TAG_enumeration_type:
1340                 /* the type referred to will be loaded when we need it, so skip it */
1341                 break;
1342             default:
1343                 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1344                       child->abbrev->tag, dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di));
1345             }
1346         }
1347     }
1348
1349     symt_close_func_block(subpgm->ctx->module, subpgm->func, block, 0);
1350 }
1351
1352 static struct symt* dwarf2_parse_subprogram(dwarf2_parse_context_t* ctx,
1353                                             dwarf2_debug_info_t* di,
1354                                             struct symt_compiland* compiland)
1355 {
1356     struct attribute name;
1357     struct attribute low_pc;
1358     struct attribute high_pc;
1359     struct attribute is_decl;
1360     struct attribute inline_flags;
1361     struct symt* ret_type;
1362     struct symt_function_signature* sig_type;
1363     dwarf2_subprogram_t subpgm;
1364
1365     if (di->symt) return di->symt;
1366
1367     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1368
1369     if (!dwarf2_find_attribute(ctx, di, DW_AT_low_pc, &low_pc)) low_pc.u.uvalue = 0;
1370     if (!dwarf2_find_attribute(ctx, di, DW_AT_high_pc, &high_pc)) high_pc.u.uvalue = 0;
1371     /* As functions (defined as inline assembly) get debug info with dwarf
1372      * (not the case for stabs), we just drop Wine's thunks here...
1373      * Actual thunks will be created in elf_module from the symbol table
1374      */
1375     if (elf_is_in_thunk_area(ctx->module->module.BaseOfImage + low_pc.u.uvalue,
1376                              ctx->thunks) >= 0)
1377         return NULL;
1378     if (!dwarf2_find_attribute(ctx, di, DW_AT_declaration, &is_decl)) is_decl.u.uvalue = 0;
1379     if (!dwarf2_find_attribute(ctx, di, DW_AT_inline, &inline_flags)) inline_flags.u.uvalue = 0;
1380     dwarf2_find_name(ctx, di, &name, "subprogram");
1381     ret_type = dwarf2_lookup_type(ctx, di);
1382
1383     /* FIXME: assuming C source code */
1384     sig_type = symt_new_function_signature(ctx->module, ret_type, CV_CALL_FAR_C);
1385     if (!is_decl.u.uvalue)
1386     {
1387         subpgm.func = symt_new_function(ctx->module, compiland, name.u.string,
1388                                         ctx->module->module.BaseOfImage + low_pc.u.uvalue,
1389                                         high_pc.u.uvalue - low_pc.u.uvalue,
1390                                         &sig_type->symt);
1391         di->symt = &subpgm.func->symt;
1392     }
1393     else subpgm.func = NULL;
1394
1395     subpgm.ctx = ctx;
1396     subpgm.compiland = compiland;
1397     if (dwarf2_compute_location(ctx, di, DW_AT_frame_base, &subpgm.frame_offset, &subpgm.frame_reg))
1398         TRACE("For %s got %ld/%d\n", name.u.string, subpgm.frame_offset, subpgm.frame_reg);
1399     else /* on stack !! */
1400     {
1401         subpgm.frame_reg = 0;
1402         subpgm.frame_offset = 0;
1403     }
1404
1405     if (di->abbrev->have_child) /** any interest to not have child ? */
1406     {
1407         dwarf2_debug_info_t**   pchild = NULL;
1408         dwarf2_debug_info_t*    child;
1409
1410         while ((pchild = vector_iter_up(&di->children, pchild)))
1411         {
1412             child = *pchild;
1413
1414             switch (child->abbrev->tag)
1415             {
1416             case DW_TAG_variable:
1417             case DW_TAG_formal_parameter:
1418                 dwarf2_parse_variable(&subpgm, NULL, child);
1419                 break;
1420             case DW_TAG_lexical_block:
1421                 dwarf2_parse_subprogram_block(&subpgm, NULL, child);
1422                 break;
1423             case DW_TAG_inlined_subroutine:
1424                 dwarf2_parse_inlined_subroutine(&subpgm, child);
1425                 break;
1426             case DW_TAG_subprogram:
1427                 /* FIXME: likely a declaration (to be checked)
1428                  * skip it for now
1429                  */
1430                 break;
1431             case DW_TAG_label:
1432                 dwarf2_parse_subprogram_label(&subpgm, child);
1433                 break;
1434             case DW_TAG_class_type:
1435             case DW_TAG_structure_type:
1436             case DW_TAG_union_type:
1437             case DW_TAG_enumeration_type:
1438             case DW_TAG_typedef:
1439                 /* the type referred to will be loaded when we need it, so skip it */
1440                 break;
1441             case DW_TAG_unspecified_parameters:
1442                 /* FIXME: no support in dbghelp's internals so far */
1443                 break;
1444             default:
1445                 FIXME("Unhandled Tag type 0x%lx at %s, for %s\n",
1446                       child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1447             }
1448         }
1449     }
1450
1451     symt_normalize_function(subpgm.ctx->module, subpgm.func);
1452
1453     return di->symt;
1454 }
1455
1456 static struct symt* dwarf2_parse_subroutine_type(dwarf2_parse_context_t* ctx,
1457                                                  dwarf2_debug_info_t* di)
1458 {
1459     struct symt* ret_type;
1460     struct symt_function_signature* sig_type;
1461
1462     if (di->symt) return di->symt;
1463
1464     TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di));
1465
1466     ret_type = dwarf2_lookup_type(ctx, di);
1467
1468     /* FIXME: assuming C source code */
1469     sig_type = symt_new_function_signature(ctx->module, ret_type, CV_CALL_FAR_C);
1470
1471     if (di->abbrev->have_child) /** any interest to not have child ? */
1472     {
1473         dwarf2_debug_info_t**   pchild = NULL;
1474         dwarf2_debug_info_t*    child;
1475
1476         while ((pchild = vector_iter_up(&di->children, pchild)))
1477         {
1478             child = *pchild;
1479
1480             switch (child->abbrev->tag)
1481             {
1482             case DW_TAG_formal_parameter:
1483                 symt_add_function_signature_parameter(ctx->module, sig_type,
1484                                                       dwarf2_lookup_type(ctx, child));
1485                 break;
1486             case DW_TAG_unspecified_parameters:
1487                 WARN("Unsupported unspecified parameters\n");
1488                 break;
1489             }
1490         }
1491     }
1492
1493     return di->symt = &sig_type->symt;
1494 }
1495
1496 static void dwarf2_load_one_entry(dwarf2_parse_context_t* ctx,
1497                                   dwarf2_debug_info_t* di,
1498                                   struct symt_compiland* compiland)
1499 {
1500     switch (di->abbrev->tag)
1501     {
1502     case DW_TAG_typedef:
1503         dwarf2_parse_typedef(ctx, di);
1504         break;
1505     case DW_TAG_base_type:
1506         dwarf2_parse_base_type(ctx, di);
1507         break;
1508     case DW_TAG_pointer_type:
1509         dwarf2_parse_pointer_type(ctx, di);
1510         break;
1511     case DW_TAG_class_type:
1512         dwarf2_parse_udt_type(ctx, di, UdtClass);
1513         break;
1514     case DW_TAG_structure_type:
1515         dwarf2_parse_udt_type(ctx, di, UdtStruct);
1516         break;
1517     case DW_TAG_union_type:
1518         dwarf2_parse_udt_type(ctx, di, UdtUnion);
1519         break;
1520     case DW_TAG_array_type:
1521         dwarf2_parse_array_type(ctx, di);
1522         break;
1523     case DW_TAG_const_type:
1524         dwarf2_parse_const_type(ctx, di);
1525         break;
1526     case DW_TAG_volatile_type:
1527         dwarf2_parse_volatile_type(ctx, di);
1528         break;
1529     case DW_TAG_reference_type:
1530         dwarf2_parse_reference_type(ctx, di);
1531         break;
1532     case DW_TAG_enumeration_type:
1533         dwarf2_parse_enumeration_type(ctx, di);
1534         break;
1535     case DW_TAG_subprogram:
1536         dwarf2_parse_subprogram(ctx, di, compiland);
1537         break;
1538     case DW_TAG_subroutine_type:
1539         dwarf2_parse_subroutine_type(ctx, di);
1540         break;
1541     case DW_TAG_variable:
1542         {
1543             dwarf2_subprogram_t subpgm;
1544
1545             subpgm.ctx = ctx;
1546             subpgm.compiland = compiland;
1547             subpgm.func = NULL;
1548             subpgm.frame_offset = 0;
1549             subpgm.frame_reg = 0;
1550             dwarf2_parse_variable(&subpgm, NULL, di);
1551         }
1552         break;
1553     default:
1554         FIXME("Unhandled Tag type 0x%lx at %s, for %lu\n",
1555               di->abbrev->tag, dwarf2_debug_ctx(ctx), di->abbrev->entry_code);
1556     }
1557 }
1558
1559 static void dwarf2_set_line_number(struct module* module, unsigned long address,
1560                                    struct vector* v, unsigned file, unsigned line)
1561 {
1562     struct symt_function*       func;
1563     int                         idx;
1564     unsigned*                   psrc;
1565
1566     if (!file || !(psrc = vector_at(v, file - 1))) return;
1567
1568     TRACE("%s %lx %s %u\n", module->module.ModuleName, address, source_get(module, *psrc), line);
1569     if ((idx = symt_find_nearest(module, address)) == -1 ||
1570         module->addr_sorttab[idx]->symt.tag != SymTagFunction) return;
1571     func = (struct symt_function*)module->addr_sorttab[idx];
1572     symt_add_func_line(module, func, *psrc, line, address - func->address);
1573 }
1574
1575 static void dwarf2_parse_line_numbers(const dwarf2_section_t* sections,
1576                                       dwarf2_parse_context_t* ctx,
1577                                       unsigned long offset)
1578 {
1579     dwarf2_traverse_context_t   traverse;
1580     unsigned long               length;
1581     unsigned                    version, header_len, insn_size, default_stmt;
1582     unsigned                    line_range, opcode_base;
1583     int                         line_base;
1584     const unsigned char*        opcode_len;
1585     struct vector               dirs;
1586     struct vector               files;
1587     const char**                p;
1588
1589     traverse.data = sections[section_line].address + offset;
1590     traverse.start_data = traverse.data;
1591     traverse.end_data = traverse.data + 4;
1592     traverse.word_size = ctx->word_size;
1593
1594     length = dwarf2_parse_u4(&traverse);
1595     traverse.end_data = traverse.start_data + length;
1596
1597     version = dwarf2_parse_u2(&traverse);
1598     header_len = dwarf2_parse_u4(&traverse);
1599     insn_size = dwarf2_parse_byte(&traverse);
1600     default_stmt = dwarf2_parse_byte(&traverse);
1601     line_base = (signed char)dwarf2_parse_byte(&traverse);
1602     line_range = dwarf2_parse_byte(&traverse);
1603     opcode_base = dwarf2_parse_byte(&traverse);
1604
1605     opcode_len = traverse.data;
1606     traverse.data += opcode_base - 1;
1607
1608     vector_init(&dirs, sizeof(const char*), 4);
1609     p = vector_add(&dirs, &ctx->pool);
1610     *p = ".";
1611     while (*traverse.data)
1612     {
1613         TRACE("Got include %s\n", (const char*)traverse.data);
1614         p = vector_add(&dirs, &ctx->pool);
1615         *p = (const char *)traverse.data;
1616         traverse.data += strlen((const char *)traverse.data) + 1;
1617     }
1618     traverse.data++;
1619
1620     vector_init(&files, sizeof(unsigned), 16);
1621     while (*traverse.data)
1622     {
1623         unsigned int    dir_index, mod_time, length;
1624         const char*     name;
1625         const char*     dir;
1626         unsigned*       psrc;
1627
1628         name = (const char*)traverse.data;
1629         traverse.data += strlen(name) + 1;
1630         dir_index = dwarf2_leb128_as_unsigned(&traverse);
1631         mod_time = dwarf2_leb128_as_unsigned(&traverse);
1632         length = dwarf2_leb128_as_unsigned(&traverse);
1633         dir = *(const char**)vector_at(&dirs, dir_index);
1634         TRACE("Got file %s/%s (%u,%u)\n", dir, name, mod_time, length);
1635         psrc = vector_add(&files, &ctx->pool);
1636         *psrc = source_new(ctx->module, dir, name);
1637     }
1638     traverse.data++;
1639
1640     while (traverse.data < traverse.end_data)
1641     {
1642         unsigned long address = 0;
1643         unsigned file = 1;
1644         unsigned line = 1;
1645         unsigned is_stmt = default_stmt;
1646         BOOL basic_block = FALSE, end_sequence = FALSE;
1647         unsigned opcode, extopcode, i;
1648
1649         while (!end_sequence)
1650         {
1651             opcode = dwarf2_parse_byte(&traverse);
1652             TRACE("Got opcode %x\n", opcode);
1653
1654             if (opcode >= opcode_base)
1655             {
1656                 unsigned delta = opcode - opcode_base;
1657
1658                 address += (delta / line_range) * insn_size;
1659                 line += line_base + (delta % line_range);
1660                 basic_block = TRUE;
1661                 dwarf2_set_line_number(ctx->module, address, &files, file, line);
1662             }
1663             else
1664             {
1665                 switch (opcode)
1666                 {
1667                 case DW_LNS_copy:
1668                     basic_block = FALSE;
1669                     dwarf2_set_line_number(ctx->module, address, &files, file, line);
1670                     break;
1671                 case DW_LNS_advance_pc:
1672                     address += insn_size * dwarf2_leb128_as_unsigned(&traverse);
1673                     break;
1674                 case DW_LNS_advance_line:
1675                     line += dwarf2_leb128_as_signed(&traverse);
1676                     break;
1677                 case DW_LNS_set_file:
1678                     file = dwarf2_leb128_as_unsigned(&traverse);
1679                     break;
1680                 case DW_LNS_set_column:
1681                     dwarf2_leb128_as_unsigned(&traverse);
1682                     break;
1683                 case DW_LNS_negate_stmt:
1684                     is_stmt = !is_stmt;
1685                     break;
1686                 case DW_LNS_set_basic_block:
1687                     basic_block = 1;
1688                     break;
1689                 case DW_LNS_const_add_pc:
1690                     address += ((255 - opcode_base) / line_range) * insn_size;
1691                     break;
1692                 case DW_LNS_fixed_advance_pc:
1693                     address += dwarf2_parse_u2(&traverse);
1694                     break;
1695                 case DW_LNS_extended_op:
1696                     dwarf2_leb128_as_unsigned(&traverse);
1697                     extopcode = dwarf2_parse_byte(&traverse);
1698                     switch (extopcode)
1699                     {
1700                     case DW_LNE_end_sequence:
1701                         dwarf2_set_line_number(ctx->module, address, &files, file, line);
1702                         end_sequence = TRUE;
1703                         break;
1704                     case DW_LNE_set_address:
1705                         address = ctx->module->module.BaseOfImage + dwarf2_parse_addr(&traverse);
1706                         break;
1707                     case DW_LNE_define_file:
1708                         FIXME("not handled %s\n", traverse.data);
1709                         traverse.data += strlen((const char *)traverse.data) + 1;
1710                         dwarf2_leb128_as_unsigned(&traverse);
1711                         dwarf2_leb128_as_unsigned(&traverse);
1712                         dwarf2_leb128_as_unsigned(&traverse);
1713                         break;
1714                     default:
1715                         FIXME("Unsupported extended opcode %x\n", extopcode);
1716                         break;
1717                     }
1718                     break;
1719                 default:
1720                     WARN("Unsupported opcode %x\n", opcode);
1721                     for (i = 0; i < opcode_len[opcode]; i++)
1722                         dwarf2_leb128_as_unsigned(&traverse);
1723                     break;
1724                 }
1725             }
1726         }
1727     }
1728 }
1729
1730 static BOOL dwarf2_parse_compilation_unit(const dwarf2_section_t* sections,
1731                                           const dwarf2_comp_unit_t* comp_unit,
1732                                           struct module* module,
1733                                           const struct elf_thunk_area* thunks,
1734                                           const unsigned char* comp_unit_cursor)
1735 {
1736     dwarf2_parse_context_t ctx;
1737     dwarf2_traverse_context_t traverse;
1738     dwarf2_traverse_context_t abbrev_ctx;
1739     dwarf2_debug_info_t* di;
1740     BOOL ret = FALSE;
1741
1742     TRACE("Compilation Unit Header found at 0x%x:\n",
1743           comp_unit_cursor - sections[section_debug].address);
1744     TRACE("- length:        %lu\n", comp_unit->length);
1745     TRACE("- version:       %u\n",  comp_unit->version);
1746     TRACE("- abbrev_offset: %lu\n", comp_unit->abbrev_offset);
1747     TRACE("- word_size:     %u\n",  comp_unit->word_size);
1748
1749     if (comp_unit->version != 2)
1750     {
1751         WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n",
1752              comp_unit->version);
1753         return FALSE;
1754     }
1755
1756     pool_init(&ctx.pool, 65536);
1757     ctx.sections = sections;
1758     ctx.section = section_debug;
1759     ctx.module = module;
1760     ctx.word_size = comp_unit->word_size;
1761     ctx.thunks = thunks;
1762     ctx.ref_offset = comp_unit_cursor - sections[section_debug].address;
1763
1764     traverse.start_data = comp_unit_cursor + sizeof(dwarf2_comp_unit_stream_t);
1765     traverse.data = traverse.start_data;
1766     traverse.word_size = comp_unit->word_size;
1767     traverse.end_data = comp_unit_cursor + comp_unit->length + sizeof(unsigned);
1768
1769     abbrev_ctx.start_data = sections[section_abbrev].address + comp_unit->abbrev_offset;
1770     abbrev_ctx.data = abbrev_ctx.start_data;
1771     abbrev_ctx.end_data = sections[section_abbrev].address + sections[section_abbrev].size;
1772     abbrev_ctx.word_size = comp_unit->word_size;
1773     dwarf2_parse_abbrev_set(&abbrev_ctx, &ctx.abbrev_table, &ctx.pool);
1774
1775     sparse_array_init(&ctx.debug_info_table, sizeof(dwarf2_debug_info_t), 128);
1776     dwarf2_read_one_debug_info(&ctx, &traverse, &di);
1777
1778     if (di->abbrev->tag == DW_TAG_compile_unit)
1779     {
1780         struct attribute            name;
1781         dwarf2_debug_info_t**       pdi = NULL;
1782         struct attribute            stmt_list;
1783
1784         dwarf2_find_name(&ctx, di, &name, "compiland");
1785         di->symt = &symt_new_compiland(module, source_new(module, NULL, name.u.string))->symt;
1786
1787         if (di->abbrev->have_child)
1788         {
1789             while ((pdi = vector_iter_up(&di->children, pdi)))
1790             {
1791                 dwarf2_load_one_entry(&ctx, *pdi, (struct symt_compiland*)di->symt);
1792             }
1793         }
1794         if (dwarf2_find_attribute(&ctx, di, DW_AT_stmt_list, &stmt_list))
1795         {
1796             dwarf2_parse_line_numbers(sections, &ctx, stmt_list.u.uvalue);
1797         }
1798         ret = TRUE;
1799     }
1800     else FIXME("Should have a compilation unit here\n");
1801     pool_destroy(&ctx.pool);
1802     return ret;
1803 }
1804
1805 BOOL dwarf2_parse(struct module* module, unsigned long load_offset,
1806                   const struct elf_thunk_area* thunks,
1807                   const unsigned char* debug, unsigned int debug_size,
1808                   const unsigned char* abbrev, unsigned int abbrev_size,
1809                   const unsigned char* str, unsigned int str_size,
1810                   const unsigned char* line, unsigned int line_size)
1811 {
1812     dwarf2_section_t    section[section_max];
1813     const unsigned char*comp_unit_cursor = debug;
1814     const unsigned char*end_debug = debug + debug_size;
1815
1816     section[section_debug].address = debug;
1817     section[section_debug].size = debug_size;
1818     section[section_abbrev].address = abbrev;
1819     section[section_abbrev].size = abbrev_size;
1820     section[section_string].address = str;
1821     section[section_string].size = str_size;
1822     section[section_line].address = line;
1823     section[section_line].size = line_size;
1824
1825     while (comp_unit_cursor < end_debug)
1826     {
1827         const dwarf2_comp_unit_stream_t* comp_unit_stream;
1828         dwarf2_comp_unit_t comp_unit;
1829
1830         comp_unit_stream = (const dwarf2_comp_unit_stream_t*) comp_unit_cursor;
1831         comp_unit.length = *(unsigned long*)  comp_unit_stream->length;
1832         comp_unit.version = *(unsigned short*) comp_unit_stream->version;
1833         comp_unit.abbrev_offset = *(unsigned long*) comp_unit_stream->abbrev_offset;
1834         comp_unit.word_size = *(unsigned char*) comp_unit_stream->word_size;
1835
1836         dwarf2_parse_compilation_unit(section, &comp_unit, module,
1837                                       thunks, comp_unit_cursor);
1838         comp_unit_cursor += comp_unit.length + sizeof(unsigned);
1839     }
1840     module->module.SymType = SymDia;
1841     module->module.CVSig = 'D' | ('W' << 8) | ('A' << 16) | ('R' << 24);
1842     /* FIXME: we could have a finer grain here */
1843     module->module.LineNumbers = TRUE;
1844     module->module.GlobalSymbols = TRUE;
1845     module->module.TypeInfo = TRUE;
1846     module->module.SourceIndexed = TRUE;
1847     module->module.Publics = TRUE;
1848     return TRUE;
1849 }